Gave Up: Boston Mob: the rise and fall of the New England mob and its most notorious killer by Marc Songini, 2014, 9780312373634.
This had a rave review on either a Friday Forgotten or on Crimespree magazine. I was enjoying some of the crazy tales of psychopaths and killers. I couldn't keep all the names and feuds and arguments straight and quit at page 150 or so.
I'm amazed anyone survived working with or near the nutbags Songini writes about. The killers were casual with death and killed people for the slimmest of reasons.